If Cryo-Yeti is on the field, Ice Moon can boost him up to a maximum of +4/4 if it is played on a lane with two plants on it.
You can also use Excavator Zombie to Bounce this environment, allowing you to freeze another ground lane of plants.
Against
Be careful of this environment as it can prevent a powerful plant from attacking and a strong zombie there to do a lot of damage. While the Freeze effect only lasts for one turn, be wary of the Strikethrough trait it gives, especially when a high-strength zombie is in it.
While it won't reverse the Freeze effect, you can override this environment with one of yours to prevent the zombie from getting Strikethrough.
Gallery
Ice Moon's statistics
Ice Moon costing 0
Ice Moon's sprites
Ice Moon's card image
Ice Moon being played
Ice Moon activating its ability
Ice Moon's appearance when overridden by another environment (Medulla Nebula in this case)
Sneaky class. It costs 1
to play, and its ability gives all zombies in it the 
Strikethrough trait and the 
Freeze effect to all plants on the same lane when it is played. The former ability persists until Ice Moon is overridden by another environment.
Strikethrough. When played: 
Deadly zombies, or 
Bullseye zombies, as well as zombies that activate their abilities when they hit the plant hero, such as Dr. Spacetime. However, it doesn't synergize with Cheese Cutter and Abracadaver since they are in the Beastly and Crazy classes, meaning Huge-Gigantacus has to get them from Frosty Mustache, Duckstache, Raiding Raptor (Cheese Cutter), Dr. Spacetime (Cheese Cutter), Interdimensional Zombie (Abracadaver), Tomb Raiser Zombie (Abracadaver), Evolutionary Leap, Transformation Station and Triplication first. Another way if you are playing as Brain Freeze and Impfinity is to get Ice Moon from Quasar Wizard first, in which Brain Freeze obtained said card (Quasar Wizard) from Frosty Mustache. It also has the ability to 
/4
if it is played on a lane with two plants on it.
Brainy
Crazy
Hearty
Sneaky
